install from github using composer and no composer.json in github - cakephp

Question

I try to install the plugin CakePHP-CSV using Composer. I forked it from ProLoser/CakePHP-CSV.
I don't want to install it in Vendor, but in Plugin folder and with the name of Csv and not the default one that is the plugin name. I tried to use the extra in composer.json but what ever I tried it installs it in Vendor folder of the project.
"repositories": [
{
"type": "package",
"package": {
"name": "CakePHP-CSV/Csv",
"version": "dev-master",
"source": {
"url": "https://github.com/sela/CakePHP-CSV",
"type": "git",
"reference": "origin/master"
}
}
}
],
"require": {
"CakePHP-CSV/Csv": "dev-master",
},
"config": {
"vendor-dir": "Vendor"
},
"extra": {
"installer-paths": {
"Plugin/Cvs": ["Plugin/cvs"]
}
}

Answer 1

You need to make your package depend on composer/installers.
From Composer's documentation:
If you are a package author and want your package installed to a custom directory, simply require composer/installers and set the appropriate type. This is common if your package is intended for a specific framework such as CakePHP, Drupal or WordPress. Here is an example composer.json file for a WordPress theme:
{
"name": "you/themename",
"type": "wordpress-theme",
"require": {
"composer/installers": "~1.0"
}
}
And later (I've added italics to the important part):
As a package consumer you can set or override the install path for a package that requires composer/installers by configuring the installer-paths extra. A useful example would be for a Drupal multisite setup where the package should be installed into your sites subdirectory.
Note that extra is simply a place to put arbitrary data:
Arbitrary extra data for consumption by scripts.
This can be virtually anything. To access it from within a script event handler, you can do:
$extra = $event->getComposer()->getPackage()->getExtra();
The second part is very important; something has to retrieve the extra data and do something with it. In this instance that something is composer/installers.

Answer 2

I needed more space for the code so I answer myself. The following code worked and I didn't need to fork the code.
"repositories": [
{
"type": "package",
"package": {
"name": "ProLoser/CakePHP-CSV",
"version": "1.0",
"type": "cakephp-plugin",
"dist": {
"url": "https://github.com/ProLoser/CakePHP-CSV/archive/master.zip",
"type": "zip"
}
}
}
],
"require": {
"composer/installers": "~1.0.0",
"ProLoser/CakePHP-CSV": "1.*"
},
"config": {
"vendor-dir": "Vendor"
}